The girl found in the previous episode introduces herself as Yui Furukawa and has an amnesia despite knowing SÅ's name. With the help of Nagisa, Yui becomes a student of Uchihama Academy. The Astronomy Club, along with Yui as a provisional member, prepares for the upcoming school festival. The student council seeks help from the club to investigate rumors of ghost sightings in the academy. Yui retrieves her hat in the club room and accidentally activates the black box. She then vaguely tells Nagisa about her mission in coming to the school, seemingly regaining her memories.